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Finding the Fourth Proportional to 393,203,674.88, 589,783,466.88 and 120,573,693.44

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Solution

The fourth proportional to 393,203,674.88, 589,783,466.88 and 120,573,693.44 is: 180,853,780.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,203,674.88 : 589,783,466.88 = 120,573,693.44 : x
  2. Step 2: Convert to fraction form
    393,203,674.88/589,783,466.88 = 120,573,693.44/x
  3. Step 3: Cross multiply
    393,203,674.88x = 589,783,466.88 × 120,573,693.44
  4. Step 4: Simplify right side
    393,203,674.88x = 71,112,370,931,569,512
  5. Step 5: Solve for x
    x = 71,112,370,931,569,512/393,203,674.88
  6. Step 6: Final answer
    x = 180,853,780.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.